Page 54 - Urban Jungle mode d'emploi_EN_HD

SUSPENSION ON URBAN JUNGLE BIKES
GLOSSARY
Suspension fork (c)
Bicycle fork absorbing and damping shocks through moving components. The most common among these forks are the telescopic suspension forks (d). What is designated as stanchion tubes are the thinner tubes press fitted or screwed to the fork crown of a telescopic fork. What is designated as lower leg are the lower tubes in which the stanchion tubes slide in.
Spring rate or hardness
The force that is required to compress the spring by a certain suspension travel – measured in Newton per millimetre (N/mm) or pound per inch (lbs/in). A higher spring rate requires more force for the travel. With air springs a higher rate means a higher pressure (e).
Spring preload
In the case of the widespread air suspension systems, the air pressure in the fork is crucial for the spring rate and the spring preload. Observe your manufacturer’s recommendations.
Within a certain range a preload can be applied to the coil springs. Then the suspension only reacts when a greater load is applied. The spring rate remains, however, unaltered. Heavier riders cannot compensate a too soft spring rate with a higher initial tension.
Negative suspension travel (“sag») (f)
The suspension travel that is taken up by the rear structure or the fork when the rider takes up his or her usual riding position at a standstill. This is usually specified as a percentage of the overall suspension travel.
d
e
f
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